The company says the CX 400BT uses the same “dynamic” 7mm drivers as the Momentum True Wireless 2. Sennheiser touts the “deep bass, natural mids and clear, detailed treble” of that ...

The excellent sounding CX 400BT True Wireless earbuds are a more affordable alternative to the Momentum True Wireless II.

Sennheiser’s $179 CX Plus are the first time noise cancellation has appeared on its more affordable CX range. They offer 24 hours of battery life, and an IPX4 rating for splash resistance.